CN102253760A - Optical touch display device - Google Patents
Optical touch display device Download PDFInfo
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- CN102253760A CN102253760A CN2010102622858A CN201010262285A CN102253760A CN 102253760 A CN102253760 A CN 102253760A CN 2010102622858 A CN2010102622858 A CN 2010102622858A CN 201010262285 A CN201010262285 A CN 201010262285A CN 102253760 A CN102253760 A CN 102253760A
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- light
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- touch control
- optical touch
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Abstract
An optical touch display device includes a display unit and at least one light sensing module. The display unit includes a first substrate and a display layer. The first substrate has a display area and a non-display area surrounding the display area. The display layer is disposed on the display area of the first substrate. The light sensing module is disposed on an upper surface of the non-display area of the first substrate. A side surface of the light sensing module has a light sensing window, and at least a portion of the light sensing window is adapted to receive light above the display unit. The optical touch display device has a thin thickness.
Description
Technical field
The present invention is relevant for a kind of touch control display apparatus, and particularly relevant for a kind of optical touch control display device.
Background technology
Touch control display apparatus has the advantage of processing ease, so be widely used in multiple electronic product in recent years, as mobile phone, personal digital assistant (personal digital assistant, PDA), digital still camera, music player, computer, Satellite Navigation Set etc.
Common touch control display apparatus has resistance type touch display device, capacitive touch control display device and optical touch control display device etc. at present, and wherein the optical touch control display device is because of having lower-cost advantage, so come into one's own gradually.
Fig. 1 is the synoptic diagram of existing a kind of optical touch control display device.Please refer to Fig. 1, existing optical touch control display device 100 comprises liquid crystal display 110, touch control unit 120 and transparency carrier 130.Liquid crystal display 110 comprises infrabasal plate 111, upper substrate 112, liquid crystal layer 113, backlight (backlight source) 114 and framework 115.Liquid crystal layer 113 is disposed between infrabasal plate 111 and the upper substrate 112, and liquid crystal layer 113, infrabasal plate 111 and upper substrate 112 are formed display panels 116.Backlight 114 is disposed at the below of display panels 116, to provide display light to display panels 116.Framework 115 is in order to immobile liquid LCD panel 116 and backlight 114.In addition, transparency carrier 130 is disposed on the framework 115, and is positioned at liquid crystal layer 113 tops, and touch control unit 120 is disposed on the transparency carrier 130.Touch control unit 120 comprises that light source 122 and light detect module 124, and light source 122 is in order to providing light 123, and light detects module 124 in order to receive the light 123 that light source 122 is provided.
Hold above-mentionedly, light detects module 124 and has a plurality of photosensitive pixels, to detect light 123.When the user when touch control unit 120 carries out control action, the bang path of part light 123 can be changed, and causes the part photosensitive pixel can't detect light 123.Can extrapolate according to these photosensitive pixels that do not detect light 123 and to control the position.
In the prior art, because touch control unit 120 is arranged on the transparency carrier 130, cause the integral thickness of optical touch control display device 100 thicker.
Summary of the invention
The invention provides a kind of optical touch control display device, it has thin thickness.
For reaching above-mentioned advantage, the present invention proposes a kind of optical touch control display device, comprises that a display unit and at least one light detect module.Display unit comprises one first substrate and a display layer.First substrate has a viewing area and a non-display area that centers on the viewing area, and display layer is disposed on the viewing area of first substrate.Light detects the upper surface that module is disposed at the non-display area of first substrate, and the side surface that light detects module has a sensitization form, and can be received in the light of display unit top to small part sensitization form.
In one embodiment of this invention, above-mentioned light detection module comprises a detecting unit and a fixed cell.Fixed cell detecting unit is fixed in the non-display area top of first substrate and with the detecting unit bed hedgehopping to the display unit top, cause the detecting unit can be by detecting the light above display unit and export a detection signal to small part sensitization form.
In one embodiment of this invention, the side surface system contact display layer of sensitization form is set in light detects module, and detects side surface that the sensitization form is set in the module and sensitization form perpendicular to first substrate at light.
In one embodiment of this invention, above-mentioned light detection module more comprises a lens unit (lens unit) and a circuit board.Lens unit is in order to will providing to detecting unit from the light that the sensitization form enters, and circuit board is electrically connected detecting unit and exports the corresponding signal of the detection signal of exporting with detecting unit.Fixed cell be fixed in lens unit and detecting unit on first substrate and bed hedgehopping to sensitization form rear, but cause detecting unit scioptics unit to detect by the sensitization form by the light above display unit.
In one embodiment of this invention, above-mentioned fixed cell fixing circuit board more.
In one embodiment of this invention, above-mentioned optical touch control display device comprises that a plurality of light detect module, and the viewing area is rectangular, and light detects the corner that module is disposed at the viewing area respectively.
In one embodiment of this invention, above-mentioned detecting unit has a plurality of detection zones, and each detection zone has a visual field.Light detects module and more comprises at least one reflecting element, is disposed to the small part detection zone, with the visual field of the corresponding detection zone of transferring.
In one embodiment of this invention, above-mentioned reflecting element comprises prism.
In one embodiment of this invention, above-mentioned optical touch control display device more comprises a light source, is disposed on the non-display area of first substrate, detects module with light to the light that the zone of passing the display layer top is provided.
In one embodiment of this invention, above-mentioned light source comprises at least one light-emitting component and at least one light-guide device.Light-emitting component is in order to providing light, and light-guide device is disposed at by the light-emitting component.Light-guide device has an incidence surface and an exiting surface, and incidence surface receives light, and light is from the exiting surface outgoing.
In one embodiment of this invention, above-mentioned light-emitting component comprises the infrared light light-emitting component.
In one embodiment of this invention, above-mentioned optical touch control display device more comprises a framework, and covered section display unit and light detect module.
In one embodiment of this invention, above-mentioned display unit more comprises one second substrate and a plurality of separation material (spacer).Second substrate is relative with first substrate, and display layer is disposed between first substrate and second substrate.Separation material is disposed between first substrate and second substrate.
In one embodiment of this invention, above-mentioned display unit more comprises a backlight, is disposed at first substrate below.
In one embodiment of this invention, above-mentioned display unit comprises liquid crystal display, bi-stable display elements, organic light emitting diode display unit, electric moistening type display unit or electricity slurry display unit.
In the present invention, it is to be disposed to be used for carrying on first substrate of display layer that light detects module, but not is disposed at whole display unit top.And compared to prior art, light of the present invention detects module and has also omitted the transparency carrier that is arranged on the display unit top.Therefore, optical touch control display device of the present invention has thin thickness.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the synoptic diagram of existing a kind of optical touch control display device.
Fig. 2 is the synoptic diagram of a kind of optical touch control display device of one embodiment of the invention.
Fig. 3 is the synoptic diagram of a kind of optical touch control display device of another embodiment of the present invention.
Fig. 4 is the schematic top plan view of the optical touch control display device of another embodiment of the present invention.
Fig. 5 is the synoptic diagram of the optical touch control display device of another embodiment of the present invention.
Fig. 6 is the synoptic diagram that the light of the optical touch control display device of another embodiment of the present invention detects module.
Fig. 7 is the synoptic diagram of a kind of optical touch control display device of another embodiment of the present invention.
Fig. 8 is the schematic top plan view of a kind of optical touch control display device of another embodiment of the present invention.
The main element symbol description:
100: optical touch control display device 110: liquid crystal display 111: infrabasal plate
112: upper substrate 113: liquid crystal layer 114: backlight
115: framework 116: display panels 120: touch control unit
122: light source 123: light 124: light detects module
130: transparency carrier 200,200 ': the optical touch control display device
210: display unit 211: viewing area 211a: side
214: 216: the second substrates 217 of display layer: separation material
218: backlight 220,220a, 220b, 220 ': light detects module
221: side surface 222,222 ': detecting unit 223: the sensitization form
224,224a, 224b: fixed cell 225: detection zone
226: lens unit 227: reflecting element 228: circuit board
230: light source 231: light 232: light-emitting component
234: light-guide device 234a: incidence surface 234b: exiting surface
240: framework F: visual field
Embodiment
Fig. 2 is the synoptic diagram of a kind of optical touch control display device of one embodiment of the invention.Please refer to Fig. 2, the optical touch control display device 200 of present embodiment comprises that a display unit 210 and at least one light detect module 220.Display unit 210 comprises one first substrate 212 and a display layer 214.First substrate 212 has a viewing area 211 and a non-display area 213 that centers on viewing area 211, and display layer 214 is disposed on the viewing area 211 of first substrate 212.Light detects the upper surface 213a that module 220 is disposed at the non-display area 213 of first substrate 212, and the side surface 221 that light detects module 220 has a sensitization form 223, and can be received in the light 231 of display unit 210 tops to small part sensitization form 223.
The side surface 221 that sensitization form 223 is set in light detects module 220 for example is a contact display layer 214, and detects side surface 221 and sensitization form 223 that sensitization form 223 is set in the module 220 at light and for example be perpendicular to first substrate 211.In addition, above-mentioned display unit 210 can be the display unit of liquid crystal display, bi-stable display elements, organic light emitting diode display unit, electric moistening type display unit, electricity slurry display unit or other kinds, and Fig. 2 is to be example with the liquid crystal display.Display unit 210 can more comprise one second substrate 216 and a plurality of separation materials 217.Second substrate 216 is relative with first substrate 212, and display layer 214 is disposed between first substrate 212 and second substrate 216.Separation material 217 is disposed between first substrate 212 and second substrate 216 (promptly being positioned at display layer 124), to keep the spacing between first substrate 212 and second substrate 216.
In the present embodiment, owing to part sensitization form 223 is covered by second substrate 216, so only there is part sensitization form 223 can be received in the light 231 of display unit 210 tops.In addition, because the display layer 214 of liquid crystal display is non-autoluminescence display layer, so display unit 210 for example more comprises a backlight 218, be disposed at first substrate, 212 belows, to provide display light to display layer 214.Certainly, be among the embodiment of autoluminescence display layer at display layer, this backlight 218 can omit.
Above-mentioned optical touch control display device 200 can more comprise a light source 230, is disposed on the non-display area 213 of first substrate 212, detects module 220 with light 231 to the light that the zone of passing display layer 214 tops is provided.The light 231 that light source 230 is provided for example is infrared light, but not as limit.In addition, after light 231 entered light and detects module 220 from sensitization form 223, what light detected module 220 can detect light 231 to small part photosensitive pixel (figure does not show).When the user carried out control action on second substrate 216, the bang path of part light 231 can be changed, and the part photosensitive pixel that causes originally detecting light 231 can't detect light 231.So, can usually extrapolate and control the position because of the user carries out light-sensitive image that control action can't detect light 231 according to these.
Being different from prior art detects module with light and is disposed at whole display unit top, present embodiment detects light on the non-display area 213 that module 220 and light source 230 directly be arranged at first substrate 212 that is used for carrying display layer 214, and between light detection module 220 and display unit 210, do not need to be provided with in addition transparency carrier, so can effectively reduce the thickness of optical touch control display device 200, make it have the advantage of minimal thickness.In addition, in another embodiment, the optical touch control display device can comprise more that being used for covered section display unit 210 and light detects the framework 240 (as shown in Figure 3) of module 220.
Fig. 4 is the schematic top plan view of the optical touch-control device of another embodiment of the present invention.Please refer to Fig. 4, the viewing area 211 of present embodiment is for example rectangular, and the quantity of light detection module 220 can be a plurality of (as two), and it is arranged at the corner of viewing area 211.In addition, light source 230 comprises at least one light-emitting component 232 (Fig. 4 be example with two) and at least one light-guide device 234 (Fig. 4 be example with three).Light-emitting component 232 is in order to providing above-mentioned light 231, and that light-guide device 234 is disposed at light-emitting component 232 is other.Light-guide device 234 has an incidence surface 234a and an exiting surface 234b, and incidence surface 234a receives light 231, and light 231 is from exiting surface 234b outgoing, and by display layer (figure does not show) top.In one embodiment, light-emitting component 232 for example is the infrared light light-emitting component, but not as limit.
Though Fig. 4 is that to detect modules 220 with two light be example, in other embodiments, viewable design demand and use more light to detect module 220 (as three or four), and each light to detect module 220 for example be a wherein corner that is disposed at viewing area 211.
Fig. 5 is the synoptic diagram of the optical touch control display device of another embodiment of the present invention.Please refer to Fig. 5, in the present embodiment, light detects module 220a and comprises a detecting unit 222 and a fixed cell 224.Fixed cell 224 detecting unit 222 is fixed in non-display area 213 tops of first substrate 212 and with detecting unit 222 bed hedgehoppings to display unit 210 tops, cause the detecting unit 222 can be by detecting the light 231 above display unit 210 to small part sensitization form 223 and exporting a detection signal.
In addition, light detection module 220a can more comprise a lens unit 226 and a circuit board 228.Lens unit 226 can converge light 231, and will providing to detecting unit 222 from the light 231 that sensitization form 223 enters, and circuit board 228 is electrically connected the corresponding signal of detection signal that detecting units 222 and output and detecting unit 222 are exported.The signal that circuit board 228 is exported can be a signal after treatment, that is controls the position and calculated.Certainly, circuit board 228 also not tool calculate the function control the position, and circuit board 228 only is signal to be passed to a processing unit (figure does not show) control the position to calculate.In addition, fixed cell 224 be fixed in lens unit 226 and detecting unit 222 on first substrate 212 and bed hedgehopping to sensitization form 223 rears, but cause detecting unit 222 scioptics unit 226 detect by sensitization form 223 by and light 231 above display unit 210.In another embodiment, as shown in Figure 6, fixed cell 224a is fixing circuit board 228 more.
Fig. 7 is the synoptic diagram of a kind of optical touch control display device of another embodiment of the present invention.Please refer to Fig. 7, the light of the optical touch-control device of present embodiment detects module 220b and comprises detecting unit 222, fixed cell 224b and lens unit 226.Fixed cell 224b detecting unit 222 is fixed in non-display area 213 tops of first substrate 212 and with whole detecting unit 222 bed hedgehoppings to display unit 210 tops, cause the detecting unit 222 can be by whole sensitization form 223 and detect light 231 and output detection signal above display unit 210.In addition, the light of present embodiment detection module 220b can more comprise the circuit board (figure does not show) that is electrically connected to detecting unit 222.
Fig. 8 is the schematic top plan view of a kind of optical touch control display device of another embodiment of the present invention.Please refer to Fig. 8, it is to be disposed at by the same side 211a of Touch Zone 211 that two light of the optical touch control display device 200 ' of present embodiment detect module 220 ', and the sensitization form 223 of light detection module 220 ' for example is the side 211a of parallel Touch Zone 211.In addition, the detecting unit 222 ' that each light detects module 220 ' has a plurality of detection zones 225, and each detection zone 225 has a visual field F.Light detects module 220 ' and more comprises at least one reflecting element 227, is disposed to the small part detection zone 225, with the visual field F of the corresponding detection zone 225 of transferring.Above-mentioned reflecting element 227 for example is a prism.By the visual field F of reflecting element 227 return portion detection zones 225, the light detection module 220 ' of optical touch control display device 200 ' can be disposed at by the same side 211a of Touch Zone 211.So, the position that is provided with that can make light detect module 220 ' has more elasticity.
Be noted that though omitted light source among Fig. 8, the optical touch control display device 200 ' of present embodiment also can comprise light source.In addition, the present invention does not limit the quantity that light detects module 220 ', and light detection module 220 ' also can be arranged at by the relative dual-side of Touch Zone 211.
In sum, the light of various embodiments of the present invention detect module have at least following advantage one of them:
1. in the present invention, it is to be disposed to be used for carrying on first substrate of display layer that light detects module, but not is disposed at whole display unit top.And compared to prior art, light of the present invention detects module and has also omitted the transparency carrier that is arranged on the display unit top.Therefore, optical touch control display device of the present invention has thin thickness.
2. in one embodiment, owing to before the part detection zone of light detection module, reflecting element is set, with the visual field of turnover detection zone, so the position that is provided with that can make light detect module has more elasticity.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; the persond having ordinary knowledge in the technical field of the present invention; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (10)
1. optical touch control display device is characterized in that comprising:
A display unit comprises one first substrate and a display layer, and this first substrate has a viewing area and a non-display area that centers on this viewing area, and this display layer is disposed on this viewing area of this first substrate; And
At least one light detects module, is disposed at the upper surface of this non-display area of this first substrate, and the side surface that this light detects module has a sensitization form, and can be received in the light of this display unit top to this sensitization form of small part.
2. optical touch control display device as claimed in claim 1, it is characterized in that, this light detects module and comprises a detecting unit and a fixed cell, this fixed cell this detecting unit is fixed in this non-display area top of this first substrate and with this detecting unit bed hedgehopping to this display unit top, cause this detecting unit to detect the light above this display unit and to export a detection signal to small part sensitization form by this.
3. optical touch control display device as claimed in claim 1, it is characterized in that, detect this side surface system this display layer of contact that this sensitization form is set in module at this light, and detect this side surface that this sensitization form is set in module and this sensitization form perpendicular to this first substrate at this light.
4. optical touch control display device as claimed in claim 2 is characterized in that, this light detects module and more comprises:
A lens unit will be in order to providing from the light that this sensitization form enters to this detecting unit; And
A circuit board is electrically connected this detecting unit and exports the corresponding signal of exporting with this detecting unit of this detection signal;
Wherein, this fixed cell is fixed in this lens unit, this circuit board and this detecting unit on this first substrate, and this fixed cell with this lens unit and this detecting unit bed hedgehopping to this sensitization form rear, cause this detecting unit can by this lens unit detect by this sensitization form by and light above this display unit.
5. optical touch control display device as claimed in claim 1 is characterized in that, comprise that a plurality of these light detect module, and this viewing area is rectangular, and those light detects the corner that module is disposed at this viewing area respectively.
6. optical touch control display device as claimed in claim 2, it is characterized in that, this detecting unit has a plurality of detection zones, and each detection zone has a visual field, and this light detection module more comprises at least one reflecting element, be disposed to those detection zones of small part, with this visual field of this corresponding detection zone of transferring, wherein this reflecting element comprises prism.
7. optical touch control display device as claimed in claim 1, it is characterized in that more comprising a light source, be disposed on this non-display area of this first substrate, detect module with light to this light that the zone of passing this display layer top is provided, wherein, this light source comprises:
At least one light-emitting component is in order to provide the light of infrared light; And
At least one light-guide device is disposed at by this light-emitting component, and this light-guide device has an incidence surface and an exiting surface, and this incidence surface receives light, and light is from this exiting surface outgoing.
8. optical touch control display device as claimed in claim 1 is characterized in that, more comprises a framework, and this display unit of covered section and this light detect module.
9. optical touch control display device as claimed in claim 1 is characterized in that, this display unit more comprises:
One second substrate, relative with this first substrate, and this display layer is disposed between this first substrate and this second substrate; And
A plurality of separation materials are disposed between this first substrate and this second substrate.
10. optical touch control display device as claimed in claim 1 is characterized in that, this display unit more comprises a backlight, is disposed at this first substrate below.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34740410P | 2010-05-22 | 2010-05-22 | |
| US61/347,404 | 2010-05-22 | ||
| US61/347404 | 2010-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102253760A true CN102253760A (en) | 2011-11-23 |
| CN102253760B CN102253760B (en) | 2013-05-01 |
Family
ID=44981054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010262285 Expired - Fee Related CN102253760B (en) | 2010-05-22 | 2010-08-25 | Optical touch display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102253760B (en) |
| TW (1) | TWI401595B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201417354Y (en) * | 2009-06-11 | 2010-03-03 | 华映视讯（吴江）有限公司 | Touch display device |
| CN201421600Y (en) * | 2009-04-20 | 2010-03-10 | 原相科技股份有限公司 | Optical touch control module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7924272B2 (en) * | 2006-11-27 | 2011-04-12 | Microsoft Corporation | Infrared sensor integrated in a touch panel |
| TWM371272U (en) * | 2009-04-01 | 2009-12-21 | Pixart Imaging Inc | Optical touch control module |
-
2010
- 2010-08-25 CN CN 201010262285 patent/CN102253760B/en not_active Expired - Fee Related
- 2010-08-25 TW TW99128534A patent/TWI401595B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201421600Y (en) * | 2009-04-20 | 2010-03-10 | 原相科技股份有限公司 | Optical touch control module |
| CN201417354Y (en) * | 2009-06-11 | 2010-03-03 | 华映视讯（吴江）有限公司 | Touch display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201142675A (en) | 2011-12-01 |
| CN102253760B (en) | 2013-05-01 |
| TWI401595B (en) | 2013-07-11 |
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Granted publication date: 20130501 Termination date: 20160825 |